LINQ - C# - Using lambda - Get a set of data from a Collection

Question

I have a struct TimePoint which is similar to a Point except, the x value is a datetime, an observable collection of these timepoints and a method that takes a datetime and returns a double value. I want to retrieve the max and min value of the doubles that are returned from the datetimes in this collection. I am new to linq and am unable to figure out the query I would have to pass on the observable collection to achieve this. Here's what I am trying to get: ``` double minDouble = 0; double maxDouble = 0; foreach(TimePoint item in obsColl) { var doubleVal = ConvertToDouble(item.X); //Here x is a datetime if(minDouble > doubleVal) minDouble = doubleVal; if(maxDouble < doubleVal) maxDouble = doubleVal; } ``` How can I achieve this using LINQ? Or is LINQ not ideal for this?

Accepted Answer

You can use `Max` and `Min` for this:

```
double minDouble = obsColl.Min(item => ConvertToDouble(item.X));
double maxDouble = obsColl.Max(item => ConvertToDouble(item.X));
```

LINQ - C# - Using lambda - Get a set of data from a Collection

Solution

Problem